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/*
* Copyright (c) 2012, Stephen Colebourne & Michael Nascimento Santos
*
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package tck.java.time.chrono;
import java.time.DateTimeException;
import java.time.chrono.Era;
/**
* An era in the Coptic calendar system.
*
* The Coptic calendar system uses the 'Era of the Martyrs'.
* The start of the Coptic epoch {@code 0001-01-01 (Coptic)} is {@code 0284-08-29 (ISO)}.
*
* Do not use {@code ordinal()} to obtain the numeric representation of {@code CopticEra}.
* Use {@code getValue()} instead.
*
*
Implementation notes
* This is an immutable and thread-safe enum.
*/
public enum CopticEra implements Era {
/**
* The singleton instance for the era BEFORE_AM, 'Before Era of the Martyrs'.
* This has the numeric value of {@code 0}.
*/
BEFORE_AM,
/**
* The singleton instance for the era AM, 'Era of the Martyrs'.
* This has the numeric value of {@code 1}.
*/
AM;
//-----------------------------------------------------------------------
/**
* Obtains an instance of {@code CopticEra} from an {@code int} value.
*
* {@code CopticEra} is an enum representing the Coptic eras of BEFORE_AM/AM.
* This factory allows the enum to be obtained from the {@code int} value.
*
* @param era the BEFORE_AM/AM value to represent, from 0 (BEFORE_AM) to 1 (AM)
* @return the era singleton, not null
* @throws DateTimeException if the value is invalid
*/
public static CopticEra of(int era) {
switch (era) {
case 0:
return BEFORE_AM;
case 1:
return AM;
default:
throw new DateTimeException("Invalid era: " + era);
}
}
//-----------------------------------------------------------------------
/**
* Gets the numeric era {@code int} value.
*
* The era BEFORE_AM has the value 0, while the era AM has the value 1.
*
* @return the era value, from 0 (BEFORE_AM) to 1 (AM)
*/
public int getValue() {
return ordinal();
}
}